Synonyms of foolproof

foolproof

adjective

as in perfect

done, made, or planned so well that nothing can go wrong

a foolproof plan

DNA fingerprinting gives police a virtually foolproof way to link a suspect to a crime scene.

Synonyms & Similar Words

• perfect
• flawless
• reliable
• infallible
• sure
• unfailing
• unerring
• certain
• inerrant
• faultless
• dependable
• impeccable
• errorless

Antonyms & Near Antonyms

• defective
• imperfect
• faulty
• flawed
• unreliable
• undependable
• fallible

Example Sentences

Recent Examples of foolproof

Ultimately, a foolproof test for fake wine remains a far-off idea. —Chris Hall, WIRED, 18 Dec. 2024

Homemade foolproof fudge can be stored in the freezer, wrapped and sealed tightly in freezer safe plastic wrap or a container, for up to three months. —Melissa Gray, Southern Living, 12 Dec. 2024

From gifts for new moms (eye masks, motherhood journals) to foolproof ideas that also make great gifts for all the women in your orbit (beauty goodies to pamper her and food presents to feed her soul), these ideas never miss. —Shanna Shipin, Glamour, 2 Dec. 2024

Here below is my foolproof path for how the Titans can go 17-0 in 2024. Week 1: at Chicago Bears — Rookie quarterbacks almost never win their debuts. —Nick Suss, The Tennessean, 5 Sep. 2024